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An RAxML tree of the FGD after all recombination and reassortment sequences were removed. ABTV was used to root the phylogenetic tree. Branches with <60 per cent bootstrap support have been collapsed. Full genomes are shown with isolate name, two letter country code, year of collection, and group name. GenBank accession numbers of the components which constitute each full genome can be found in Supplementary Table S1.
